Looking for the title and author of a short story I read. I recall reading this story in a Science fiction magazine like Analog or Asimov's. The story detailed a fast food restaurant that had an elaborate defense system to protect against robbers or mass shooters. The story either directly said or hinted that these types of attacks were so common that this restaurant defense system was nothing unusual. The story details an attack on the restaurant and the defense systems countering the attack. The story ends with the employee running the defense system dropping a micro-particle screen to protect the restaurant from gunfire. The attacker is hit by the screen and is killed. I believe I read the story around 20 years ago. I think story was written prior to Columbine. I am interested to look at the short story again and read it now that I am in a future world that has many similarities to the story. Problem is I cannot not remember title or author. Would appreciate if anyone has hints of what the story might be.
As I have asked around about this short story some people have suggested the book "Altered Carbon". That book has a scene where an automatic defense system operates in a hotel. I have read that book and I know why people are making the connection to my question but the item I am looking for is definitely a short story and not a novel.